1. Shivering replaced by muscle rigidity. 肌肉僵硬取代了颤抖。
2. Analyses results show that the materials, tension and rigidity of wires, speed of trains, wave speed, and lift forces are primary factors that affect fatigue life of contact wires. 分析结果表明，接触导线线质、张力和刚度以及列车运行速度、波动传播速度和抬升力是影响导线疲劳可靠性的主要因素。
3. First analyzes the dynamic and uncertainty in the planning of small towns under the market economy, and indicates that the rigidity is the characteristic and weakness of planning of small towns. 首先分析了市场经济条件下小城镇经济发展的动态性和不确定性，在此基础上指出传统小城镇规划静态性的特征和缺陷；
英英解释
n.
1. the physical property of being stiff and resisting bending
2. the quality of being rigid and rigorously severe
